What is the average life span of a GE dishwasher is 9 to 12 years with normal residential use and proper maintenance, which is near industry average for dishwashers of 9 to 12 years and similar to Whirlpool dishwashers. Models like GDT630PYRFS, GDP630PYRFS, PDT775SYNFS, and GDT670SYVFS average 9 to 12 years because they use standard drain pumps, wash pumps, and control boards designed for 4 to 7 loads per week. Life span depends heavily on usage frequency, water hardness, and maintenance. A family running dishwasher daily will wear out drain pump, inlet valve, and wash motor faster at 8 to 10 years than household running 2 to 3 loads per week that may last 11 to 13 years. Hard water causes mineral scale on inlet valve and spray arms blocking water. Not cleaning filter monthly causes food buildup that strains pump. Overloading and not scraping plates causes clogging. To maximize life span of GE dishwasher, clean filter under lower rack monthly by removing lower rack, twisting filter, and rinsing under hot water to remove food, clean spray arm holes with toothpick to remove debris, use rinse aid to prevent mineral buildup, run Affresh cleaning cycle monthly to dissolve grease, and check door gasket for wear yearly. First parts needing replacement are usually drain pump after 4 to 6 years at 30 to 60 dollars and inlet valve at 15 to 30 dollars.
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